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Linux.Siggen.3301

Added to the Dr.Web virus database: 2020-09-09

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • /etc/rc.local
  • /etc/profile.d/bash_config
  • /etc/profile.d/linux.sh
  • /etc/profile.d/bash_config.sh
  • /etc/init.d/cron
  • /etc/init.d/ssh
  • /etc/init.d/udev
  • /etc/init.d/linux_kill
  • /etc/crontab
  • /etc/init.d/.depend.boot
  • /etc/init.d/.depend.start
  • /etc/init.d/.depend.stop
Creates or modifies the following symlinks:
  • /etc/rc0.d/linux_kill
  • /etc/rc1.d/linux_kill
  • /etc/rc2.d/linux_kill
  • /etc/rc3.d/linux_kill
  • /etc/rc4.d/linux_kill
  • /etc/rc5.d/linux_kill
  • /etc/rc6.d/linux_kill
  • /etc/rc2.d/S01linux_kill
  • /etc/rc3.d/S01linux_kill
  • /etc/rc4.d/S01linux_kill
  • /etc/rc5.d/S01linux_kill
Malicious functions:
Replaces the following system files:
  • /usr/bin/lsof
Manages services:
  • update-rc.d linux_kill defaults
  • systemctl daemon-reload
  • systemctl enable linux.service
Launches processes:
  • /bin/bash -c chmod 0755 /etc/32679
  • chmod 0755 /etc/32679
  • /etc/32679
  • <SAMPLE_FULL_PATH>
  • sleep 30
  • /bin/bash -c echo \"#!/bin/sh\" > /etc/profile.d/linux.sh
  • /bin/bash -c
  • /bin/bash -c echo -e \"#!/bin/sh\n/usr/lib/libdlrpcld.so\" > /.img
  • /bin/bash -c echo -e \"#!/bin/sh\n BEGIN INIT INFO\n#chkconfig: 2345 10 90\n#description:System.img.config\n# Default-Start: 2 3 4 5\n# Default-Stop: \n END INIT INFO\n/boot/System.img.config\nexit 0\" > /etc/init.d/linux_kill;chmod +x /etc/init.d/linux_kill
  • /bin/bash -c echo \"* * * * * root /.img \" >> /etc/crontab
  • chmod +x /etc/init.d/linux_kill
  • /bin/bash -c ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc0.d/linux_kill
  • /bin/bash -c chmod 0755 /.img
  • ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc0.d/linux_kill
  • chmod 0755 /.img
  • /bin/bash -c ln -s /etc/init.d/linux_kill /etc/rc0.d/linux_kill
  • ln -s /etc/init.d/linux_kill /etc/rc0.d/linux_kill
  • /bin/bash -c ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc1.d/linux_kill
  • ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc1.d/linux_kill
  • /bin/bash -c ln -s /etc/init.d/linux_kill /etc/rc1.d/linux_kill
  • ln -s /etc/init.d/linux_kill /etc/rc1.d/linux_kill
  • /bin/bash -c ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc2.d/linux_kill
  • ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc2.d/linux_kill
  • /bin/bash -c ln -s /etc/init.d/linux_kill /etc/rc2.d/linux_kill
  • ln -s /etc/init.d/linux_kill /etc/rc2.d/linux_kill
  • /bin/bash -c ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc3.d/linux_kill
  • ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc3.d/linux_kill
  • /bin/bash -c ln -s /etc/init.d/linux_kill /etc/rc3.d/linux_kill
  • ln -s /etc/init.d/linux_kill /etc/rc3.d/linux_kill
  • /bin/bash -c ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc4.d/linux_kill
  • ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc4.d/linux_kill
  • /bin/bash -c ln -s /etc/init.d/linux_kill /etc/rc4.d/linux_kill
  • ln -s /etc/init.d/linux_kill /etc/rc4.d/linux_kill
  • /bin/bash -c ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc5.d/linux_kill
  • ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc5.d/linux_kill
  • /bin/bash -c ln -s /etc/init.d/linux_kill /etc/rc5.d/linux_kill
  • ln -s /etc/init.d/linux_kill /etc/rc5.d/linux_kill
  • /bin/bash -c ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc6.d/linux_kill
  • ln -s /etc/rc.d/init.d/linux_kill /etc/rc.d/rc6.d/linux_kill
  • /bin/bash -c ln -s /etc/init.d/linux_kill /etc/rc6.d/linux_kill
  • ln -s /etc/init.d/linux_kill /etc/rc6.d/linux_kill
  • /bin/bash -c ln -s /etc/init.d/linux_kill /etc/rcS.d/linux_kill
  • ln -s /etc/init.d/linux_kill /etc/rcS.d/linux_kill
  • /bin/bash -c update-rc.d linux_kill defaults;chkconfig --add linux_kill
  • /sbin/insserv linux_kill
  • /bin/bash -c echo -e \"[Unit]\nDescription=\n[Service]\nType=forking\nExecStart=/boot/System.img.config\nExecReload=/boot/System.img.config\nExecStop=/boot/System.img.config\n[Install]\nWantedBy=multi-user.target\" > /etc/systemd/system/linux.service;chmod +x /etc/systemd/system/linux.service;systemctl enable linux.service
  • chmod +x /etc/systemd/system/linux.service
Performs operations with the file system:
Modifies file access rights:
  • /etc/32679
  • /etc/init.d/linux_kill
  • /.img
  • /etc/systemd/system/linux.service
Creates folders:
  • /usr/bin/lib
Creates symlinks:
  • /etc/rcS.d/linux_kill
Creates or modifies files:
  • /etc/id.services.conf
  • /etc/32679
  • /dev/.img
  • /boot/System.img.config
  • /usr/lib/libdlrpcld.so
  • /lib/system-monitor
  • /usr/sbin/ifconfig.conf
  • /usr/bin/find
  • /usr/bin/lsof
  • /.img
  • /etc/systemd/system/linux.service
Network activity:
Establishes connection:
  • 8.#.8.8:53
  • 10#.###.142.134:12345
DNS ASK:
  • zz.##atsamm.icu
Other:
Collects RAM information

Curing recommendations


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